A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 4140-01-465-1748
NSN 5998-01-231-1164
NSN 5999-01-122-4096
NSN 6650-01-318-9413
NSN 6620-01-287-1443
NSN 5996-01-580-0582
NSN 5999-00-813-7165
NSN 6645-01-099-4322
NSN 5920-00-351-8428
NSN 5945-01-256-0295
NSN 5996-00-230-5550
NSN 6110-01-633-9660